JPH0510756Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a rice cooker with an improved outer case structure of the main body.

(Prior Art) As shown in FIG. 12, a conventional rice cooker has a main body 3 formed by a cylindrical outer case 1 and a bottomed cylindrical inner case 2.
A heat insulator 4 is interposed between the outer case 1 and the inner case 2, and a bottom case 5 is fixed to the bottom of the outer case 1 with screws (not shown). In addition, the inner case 2 houses a pot 6, and a container body 3.
A lid 8 having an inner lid 7 is pivotally supported on the upper part of the pot 6, and when the lid 8 is closed, the inner lid 7 closes the upper opening of the pot 6. Further, a rice cooking heater 9 is provided at the bottom of the inner case 2, and a lid heater 10 is provided at the lid 8. Further, a lead wire 11 is disposed between the outer surface of the inner case 2 and the inner surface of the heat insulator 4, and this lead wire 1
1 connects the lid heater 10 and a terminal block (not shown) provided at the bottom of the inner case 2.

(Problem to be solved by the invention) In the above-mentioned conventional technology, the outer case 1 of the container body 3 has a cylindrical shape, and the bottom case 5 is fixed to the bottom of the outer case 1 with screws. Assembling workability was poor, the number of parts increased, and there were problems in appearance due to the boundary line between the outer case 1 and the bottom case 5 appearing. In addition, the lead wire 11 is connected to the outer surface of the inner case 2 and the heat insulator 4.
Since the wire is connected between the rice cooker and the inner surface of the rice cooker, the wiring work is time-consuming and is easily affected by the heat generated by the rice cooker heater 9. Especially in 1986
In the case where the lid is provided with an operation panel as proposed in Publication No. 39324, a large number of lead wires connected to the electronic circuit unit of the operation panel are connected to the outer surface of the inner case 2 and the inner surface of the heat insulator 4. The wiring had to be done between the two, making the wiring work even more time-consuming.

Therefore, in order to simplify the wiring work for the lead wires 11, Japanese Patent Application Laid-Open No. 63-57013 discloses a planar cross-section core that guides the lead wires along the inner surface of a mantle consisting of an upper frame body and a lower frame body. A cooker is provided with a letter-shaped metal frame, holes are provided in the metal frame, and claws are provided on the inner surface of the outer mantle, and the metal frame is attached to the outer mantle by fitting these holes and claws. Proposed. However, with this device, the metal frame that guides the lead wires and the mantle are constructed separately, so a metal frame must be prepared separately and attached to the mantle, which makes wiring the lead wires difficult. Although this can be simplified, the number of parts to be assembled increases. Furthermore, since the mantle is divided into an upper frame and a lower frame, and the upper and lower frames are assembled using screws, etc., there are more parts to be assembled, and the assembly work is difficult. Become. Furthermore, since the mantle is composed of an upper frame body and a lower frame body, there is also the problem that the boundary line between the upper frame body and the lower frame body appears, which leads to deterioration of the external design, similar to the above-mentioned problem. be.

Therefore, the purpose of the present invention is to provide a rice cooker that has an outer case that is easy to assemble and has a good appearance, and that allows easy wiring of lead wires and protects the lead wires from heat without increasing the number of parts. do.

[Structure of the invention] (Means for solving the problem) The present invention includes a container main body 21 having an inner case 24 and an outer case 23, and the inner case 24 and the outer case 2.
3, a pot 26 which is a container housed in the inner case 24, and a lid 27 provided to open and close the container body 21;
A lead wire 113 is disposed inside the outer case 23. A guide rib 56, which is a guide portion for the lead wire 113, is integrally formed on the inner surface of the side portion of the lead wire 113.

(Function) With the above configuration, the outer case 23 is integrated with the bottom case. Further, since the lead wire 113 is guided along the guide rib 56 that is integrally formed on the outer case 23, the wiring work of the lead wire 113 is easy without increasing the number of parts. protected from heat by being located on the outside of the

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 to 10, 21 is a container body, which has an outer case 23 and an inner case 24 connected by an upper frame 22. A heat insulator 25 is interposed therebetween, and a pot 26 serving as a container is accommodated in the inner case 24. Reference numeral 27 denotes a lid provided on the upper part of the container body 21 so that it can be opened and closed by a hinge part 28 and can be fixed by a clamp part 29.
A circular lower plate 30 made of metal, for example, aluminum, is attached to the lower surface of 7 with screws 31, and a lid heater 32 is provided on the upper surface of this lower plate 30.
33 is a steam vent provided in the lid 27. Reference numeral 34 denotes a stud projecting from the center lower part of the lower plate 30, and an inner lid 36 is suspended from this stud 34 via a bush 35.
6 is a step-shaped receiving part 3 provided around the entire upper part of the pot 26
7 to elastically close the upper opening of the pot 26. Reference numeral 38 denotes an annular gasket, which is clamped and fixed between the lower surface of the lid 27 and the peripheral edge of the bottom plate 30, and is in close contact with a flange portion 39 provided around the entire upper end of the pot 26 to secure the lid 27 and the pot 26 together. It is designed to seal the gap between the two. 40 is a temperature sensor provided at the center of the bottom of the inner case 24; 41;
42 is a rice-cooking heater provided on the inner bottom of the inner case 24, and 42 is a heat-retaining heater provided on the outer surface of the inner case 24.

The outer case 23 has a side portion and a bottom portion integrally formed of synthetic resin with good heat resistance such as ABS resin, and has a cylindrical shape with a bottom. A recess 45 for storing and fixing is integrally formed. A recess 46 has an opening 47 adjacent to the recess 45 , and a bottom cover 48 is fixed to the recess 46 with screws 49 so as to cover the electronic circuit unit 43 . A cord reel 50 is fixed to the outer surface with screws 51 so as to be housed in the recess 46 . A battery unit 52 is fitted into an opening 53 adjacent to the recess 45, and is fixed with screws 54.
55 is a recess 4 provided at the bottom of the outer case 23.
This is a heat shield plate attached to the inner surfaces of 5 and 46.

Furthermore, a guiding rib 56 is integrally formed on the inner surface of the side part of the outer case 23 and is located near the hinge part 28 and serves as a guide for the lead wire. It extends almost the entire vertical width of the side part of 23. 57 is a groove provided corresponding to the hinge 28 of the outer case 23, a hinge cover 58 is removably fitted into this groove 57, and an exposure receiver 59 is provided in this hinge cover 58. There is.

The heat insulating body 25 has a cylindrical shape, and a notch groove 60 is formed in the lower part of the heat insulating body 25 so as to be located near the rice cooking heater 41 and to prevent the heat retaining heater 42 from being exposed. The heat accumulated at the bottom is released through the notch groove 60.

A heat insulator 61 is provided between the lid 27 and the bottom plate 30.
are interposed therebetween, and the lid 27 has a lower lid 62, an inner lid 63, and an upper lid 64. The lower lid 6
2, a cylindrical portion 66 is integrally formed upright on the inner peripheral edge of an annular portion 65, and an upper surface portion 67 of this cylindrical portion 66 has a curved concave shape. Further, the annular portion 6 of the lower lid 62
A plurality of engaging parts 68 are provided on the periphery of the 5, and a plurality of positioning protrusions 68 are provided in the center thereof.
9 is provided. The inner lid 63 has an annular portion 70
A peripheral side surface 71 is integrally formed on the outer peripheral edge of the
An engagement receiving part 72 is provided inside the lower end of the circumferential surface 71 in correspondence with the engagement part 68, and a positioning hole 73 is provided in the annular part 70 in correspondence with the positioning protrusion 69. ing. and,
The cylindrical part 6 of the lower lid 62 is inserted into the opening 74 at the center of the inner lid 63.
6 is inserted, the inner lid 63 and the lower lid 62 are integrally fixed by the engagement between the engaging portion 68 and the engaging receiving portion 72, and the positioning protrusion 69 and the positioning hole 73 are fixed together. The inner cover 63 is connected to the lower cover 62 by fitting.
The location is determined. In addition, receiving holes 75 are formed in the annular portion 70 of the inner lid 63 in correspondence with the hinge portion 28 side and the clamp portion 29 side, respectively.
Engaging claw pieces 77 formed at both ends of the lower handle 76 are engaged with the receiving hole 75, and both ends of the lower handle 76 are fixed to the inner lid 63 with screws 78. The lower handle 76 has the clamp portion 29
is provided. The upper lid 64 has an inclination angle α
An annular portion 80 having a conical surface 79 forming an angle of 40° is formed, and a cylindrical portion 82 is vertically provided in an opening 81 at the center thereof. Further, a fitting flange 83 is integrally formed at the lower part of the upper lid 64 , and a plurality of engaging protrusions 84 are provided on the fitting flange 83 , and the cylindrical portion 66 of the lower lid 62 is disposed within the cylindrical portion 82 . is inserted, the fitting flange 83 of the upper lid 64 is inserted into the circumferential side surface 71 of the inner lid 63, and the engagement protrusion 84 and the receiving portion 85 formed on the inner surface of the circumferential side surface 71 engage with each other. The upper lid 64 and the inner lid 63 are integrally fixed. Further, a handle cover 86 is provided on the upper part of the upper lid 64, and the handle cover 86 is integrally formed with an annular portion 87 and an upper handle 88. And handle cover 8
6 has a plurality of engagement protrusions 89 formed on the inner surface, and the engagement protrusions 89 and the upper lid 64 and the lower handle 76
The annular portion 87 of the handle cover 86 is integrally fixed to the inner peripheral edge of the upper lid 64, and the upper handle 88 is integrally fixed to the lower handle 76 by engagement with the receiving portion 90 provided in the handle cover 86.

Approximately 1/3 of the conical surface 79 of the upper lid 64
The width area is an operation panel 91 whose inclination angle α is 40°.
It is formed by This operation panel 91 has a shallow groove 92 formed on the outer surface of the conical surface 79, and a plurality of holes 93 are formed in the groove 92, and each hole 93 has a light emitting diode 9.
4. An LCD cover 95, a push button 96, and an operation dial 97 are fitted, and a display sheet 98 made of plastic is fitted into the groove 92 from the outside. Further, a chamber 100 is formed inside the conical surface 79 by the cylindrical portion 82, the fitting collar 83, and the side wall 99, and the electronic circuit unit 1 is placed inside the chamber 100.
01 is provided. This electronic circuit unit 1
01 has a plurality of circuit boards 102, each circuit board 102 is provided in an inclined state, and has a conical surface 79.
The circuit board 1 is attached to a pin 103 protruding from the inner surface of the circuit board 1.
It is supported by inserting a hole 104 provided in 02, and is fixed with a screw 105. Further, a cover 106 is fixed to the lower opening of the chamber 100 with screws 107.
Further, a plurality of protrusions 108 are provided on the inner surface of the cover 106.
is formed, and this protrusion 108 is connected to the circuit board 10.
2 to support the circuit board 102. Further, a groove 109 is formed on the periphery of the cover 106, and a thin tube-shaped gasket 110 made of an extruded product is fitted into the groove 109, and when the cover 106 is fixed, the gasket 110 is inserted into the chamber. The inside of the chamber 100 of the operation panel 91 is sealed by being in close contact with the lower opening of the operation panel 100 . The operation panel 91 includes various display sections 111 for displaying the current time, timer setting status, rice cooking menu, etc., and a display section 111 for setting the time.
Various operation sections 112 are provided for setting a reservation, selecting a rice cooking menu, canceling the rice cooking menu, and starting the rice cooking menu.
Furthermore, the operation dial 97 is provided for selecting the cooked state of the white rice from standard, strong (hard), and weak (soft) when cooking the rice.

A plurality of lead wires 113 are connected to the operation panel 91 provided on the lid 27 and the lid heater 32 provided on the bottom plate 30, and these lead wires 113 are connected to the hinge portion 28 of the lid 27 and the container body 21, respectively. It passes through the opening 114 provided correspondingly to the opening 114 and the inside of the hinge cover 58 of the container body 21 between the outer surface of the heat insulator 25 and the inner surface of the outer case 23 . Further, the lead wire 113 is guided downward along a guide rib 56 protruding from the inner surface of the outer case 23 near the hinge portion 28, and is guided downward in a recess 45 near the guide rib 56. The lead wire is guided into the recess 45 from the lead wire insertion groove 115 and connected to the electronic circuit unit 43 housed in the recess 45 . Reference numeral 116 denotes a lead wire extraction groove of the chamber 100, which is sealed with a moisture-proof material 117.

In this way, in the above embodiment, the container body 21
Since the outer case 23 is formed by integrally forming the side part and the bottom part, there is no need to fix the outer case and the bottom case with screws as in the past, and the number of parts is reduced. Moreover, since there is no boundary line between the outer case and the bottom case, the appearance is favorable. In addition, outer case 23
Since a guiding rib 56 is integrally provided in the vertical direction near the hinge portion 28 on the inner surface of the lid 27, the electronic circuit unit 101 of the operation panel 91 provided on the lid 27 and the bottom plate 30 are provided with a guiding rib 56. A lead wire 11 connects the lid heater 23 and the electronic circuit unit 43 provided at the bottom of the outer case 23.
3, wiring can be easily done by guiding the lead wire 113 along the guide rib 56, and the guide rib 56 is integrally provided on the outer case 23. Therefore, the lead wire 113 can be guided without increasing the number of parts. Furthermore, since the lead wire 113 is located between the outer surface of the heat insulator 25 and the inner surface of the outer case 23, the lead wire 113 is protected from the heat of the rice cooking heater 41.
3 can be protected.

Further, a recess 45 is integrally formed at the bottom of the outer case 23, and an electronic circuit unit 43 is inserted into the recess 45.
Since the electronic circuit unit 43 is housed therein, the electronic circuit unit 43 can be protected from the heat of the rice cooking heater 41 by the bottom of the outer case 23. Further, an extra lead wire 113 can be stored in the side portion of the recess 45. In addition, since a cutout groove 60 is formed in the lower part of the heat insulator 25 interposed between the outer case 23 and the inner case 24, it is possible to prevent heat from accumulating at the bottom of the inner case 24, thereby reducing the temperature. The temperature detected by the detector 40 becomes accurate, and since the notch groove 60 is formed so that the heat-retaining heater 42 is not exposed, it is possible to suppress the heat escaping during the heat-retaining process.

Further, the operation panel 91 is arranged to form a part of the conical surface 79 having an inclination angle α of 40°.
It is easy to operate and can be clearly seen from a distance. In addition, the operation panel 91 is installed on the upper lid 64, and the inner lid 63 and the lower lid 62 are integrally assembled to the lower part of the upper lid 64. Tsute nabe 2
6, and is protected from the heat of steam and moisture generated in the pot 26 during cooking. Furthermore, since the circuit board 102 of the electronic circuit unit 101 in the operation panel 91 is divided into a plurality of parts and is clamped and fixed in an inclined state between the conical surface 79 of the upper lid 64 and the cover 106, the assembly accuracy of the circuit board 102 is increased. becomes better. Further, the electronic circuit unit 101 is housed in a chamber 100, and the chamber 100 is connected to a cover 10 through a packing 110.
Since the gasket 110 is sealed by the gasket 6, good moisture proofing can be achieved, and since the gasket 110 is made of an extrusion molded product, it is inexpensive.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the lead wire guide part is
It may be formed by providing a plurality of guide ribs 56 at intervals as shown in FIG.
The guide ribs 56 may be provided in multiple rows as shown in FIG. 1B. Further, the operation panel may be provided on the main body of the container.

[Effects of the invention] The present invention has a bottomed cylindrical outer case with a side part and a bottom integrally formed, and a lead wire guide part is integrally formed on the inner surface of the side part of this outer case.
To provide a rice cooker which has an outer case that is easy to assemble and has a good appearance, can easily wire lead wires, and can be protected from heat without increasing the number of parts.

[Brief explanation of the drawing]

1 to 9 show an embodiment of the present invention,
Figure 1 is an overall perspective view of the rice cooker, Figures 2 and 3 are
The figure is an overall sectional view, Figure 4 is an exploded perspective view, Figure 5 is an exploded perspective view of the electronic circuit unit, battery unit, cord reel, and bottom cover provided at the bottom of the outer case, and Figure 6 is the assembly of the electronic circuit unit. FIG. 7 is an exploded perspective view of the lid, FIG. 8 is an exploded perspective view of the operation panel, FIG. 9 is an enlarged sectional view of the operation panel, FIG. 10 is a front view of the operation panel, and FIG. Figures A and B are partially cutaway perspective views showing other embodiments of the present invention, and Fig. 12 is a partially cutaway front view showing a conventional example. 21... device body, 23... outer case, 24...
Inner case, 25...insulator, 26...pot (container),
56...Guiding rib (guide portion), 113...Lead wire.

Claims (1)

[Scope of utility model registration request] A container body having an inner case and an outer case, a heat insulating material provided between the inner case and the outer case, a container accommodated in the inner case, and a lid provided to open and close the container body. and a lead wire located inside the outer case,
The rice cooker is characterized in that the outer case has a side portion and a bottom portion integrally formed to form a bottomed cylindrical shape, and a guide portion for the lead wire is integrally formed inside the side portion of the outer case. vessel.